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Line 441:
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→AcquireUsbIf
The input u32 is from the u32 at entry+0 from the associated [[#QueryAvailableInterfaces]] output entry. User-processes use size 0x1B8 for the output buffer. The output buffer contains the first 0x1B8-bytes from [[#UsbHsInterface]].
The input u32 is from the u32 at entry+0 from the associated [[#QueryAvailableInterfaces]] output entry. User-processes use size 0x1B8 for the output buffer. The output buffer contains the first 0x1B8-bytes from [[#UsbHsInterface]].
This returns an error if the interface was already acquired by another process.
== GetDescriptorString ==
== GetDescriptorString ==